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Rad Physics

Concepts of Radiologic Science

Is anything that occupies space and has mass Matter
Composed of fundamental building blocks called atoms Matter
Primary distinguishing characteristic of matter Mass
Is the qty of matter as described by its energy equivalence Mass
Measured in kilograms (kg) Mass
Scientific unit of mass Kilogram (kg) 1 kilogram (kg) = 1000 grams (g)
Fundamental complex building blocks of matter Atoms & Molecules
Ability to do work Energy
Measured in Joules (J) Energy
Virtue of position Potential Energy
Energy of motion Kinetic Energy
Energy released by a chemical reaction Chemical Energy
Electron moves through an electrical potential difference (voltage) Electrical Energy
Heat is the energy of motion at the molecular level Thermal/Heat Energy
Energy that is contained w/n the nucleus of an atom Nuclear Energy
Type of energy that used in x-ray, least familiar form of energy Electromagnetic Energy RMIVUXG
Who discovered Theory of Relativity Albert Einstein
States that matter and energy are interchangeable Theory of Relativity
Matter-Energy Equivalence E=mc2
The energy emitted & transferred through space Radiation
Matter that intercepts and absorbs radiation Exposed or irradiated
Capable of removing and electron from an atom Ionizing Radiation
Removal of an electron from an atom Ionization
Two oppositely charged particles Ion Pair
Oscillating electric current & magnetic fields that travel in a vaccuum w/ velocity of light Electromagnetic Radiation
Includes alpha, beta, protons, neutrons & electrons Particulate Radiation
Annual of Natural Environmental Radiation (NER) 300 mrem = 3 mSv
Annual of Man-made Source of Radiation (MSR) 60 mrem = 0.6 mSv
Are particulate & electromagnetic radiation emitted by sun & stars, intensity increases with altitude & latitude Cosmic Rays
Results from deposits of uranium, thorium and other radionuclides of the earth Terrestrial Radiation
Potassium 40, natural metabolites Internally Deposited Radionuclides
Largest source of NER, radioactive gas produced by the natural radioactive decay of uranium Radon
Constitute the largest Man-made Source of Radiation (MSR) 39 mrem/yr = 0.39 mSv/yr Diagnostic X-rays
Forerunner of modern fluorescent, neon & xray tubes Crookes Tube
Discoverd xrays at Wurzburg University in Germany November 8, 1895
Fluorescent material used by Roentgen Barium Platinocyanide
Emission of visible light only during stimulation Flourescence
Year Roentgen received Nobel Prize in Physics 1901
He published and produced the first medical x-ray image. The first publication of x-ray examination February 1896
Created by: angelknows
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